/*
* Copyright 2005,2006 WSO2, Inc. http://www.wso2.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wso2.carbon.relay;
import org.apache.axis2.builder.*;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.AxisFault;
import org.apache.axis2.transport.MessageFormatter;
import org.apache.axis2.transport.http.XFormURLEncodedFormatter;
import org.apache.axis2.transport.http.MultipartFormDataFormatter;
import org.apache.axis2.transport.http.ApplicationXMLFormatter;
import org.apache.axis2.transport.http.SOAPMessageFormatter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.soap.SOAPEnvelope;
import javax.xml.stream.XMLStreamException;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.io.InputStream;
public class MessageBuilder {
private static Log log = LogFactory.getLog(MessageBuilder.class);
private Map<String, Builder> builders = new HashMap<String, Builder>();
private Map<String, MessageFormatter> formatters = new HashMap<String, MessageFormatter>();
public final static String RELAY_FORMATTERS_MAP = "__REALY_FORMATTERS_MAP";
public MessageBuilder() {
// first initilialize with the defualt builders
builders.put("multipart/related", new MIMEBuilder());
builders.put("application/soap+xml", new SOAPBuilder());
builders.put("text/xml", new SOAPBuilder());
builders.put("application/xop+xml", new MTOMBuilder());
builders.put("application/xml", new ApplicationXMLBuilder());
builders.put("application/x-www-form-urlencoded",
new XFormURLEncodedBuilder());
// initialize the default formatters
formatters.put("application/x-www-form-urlencoded", new XFormURLEncodedFormatter());
formatters.put("multipart/form-data", new MultipartFormDataFormatter());
formatters.put("application/xml", new ApplicationXMLFormatter());
formatters.put("text/xml", new SOAPMessageFormatter());
formatters.put("application/soap+xml", new SOAPMessageFormatter());
}
public Map<String, Builder> getBuilders() {
return builders;
}
public void addBuilder(String contentType, Builder builder) {
builders.put(contentType, builder);
}
public void addFormatter(String contentType, MessageFormatter messageFormatter) {
formatters.put(contentType, messageFormatter);
}
public Map<String, MessageFormatter> getFormatters() {
return formatters;
}
public OMElement getDocument(String contentType, MessageContext msgCtx, InputStream in) throws
XMLStreamException, AxisFault {
OMElement element = null;
Builder builder;
if (contentType != null) {
// try to get a builder from existing builders
builder = getBuilderForContentType(contentType);
if (builder != null) {
try {
element = builder.processDocument(in, contentType, msgCtx);
} catch (AxisFault axisFault) {
log.error("Error building message", axisFault);
throw axisFault;
}
}
}
if (element == null) {
if (msgCtx.isDoingREST()) {
try {
element = BuilderUtil.getPOXBuilder(in, null).getDocumentElement();
} catch (XMLStreamException e) {
log.error("Errpr building message using POX Builder", e);
throw e;
}
} else {
// switch to default
builder = new SOAPBuilder();
try {
element = builder.processDocument(in, contentType, msgCtx);
} catch (AxisFault axisFault) {
log.error("Error building message using SOAP builder");
throw axisFault;
}
}
}
// build the soap headers and body
if (element instanceof SOAPEnvelope) {
SOAPEnvelope env = (SOAPEnvelope) element;
env.hasFault();
}
return element;
}
private Builder getBuilderForContentType(String contentType) {
String type;
int index = contentType.indexOf(';');
if (index > 0) {
type = contentType.substring(0, index);
} else {
type = contentType;
}
Builder builder = builders.get(type);
if (builder == null) {
builder = builders.get(type.toLowerCase());
}
if (builder == null) {
Iterator<Map.Entry<String, Builder>> iterator = builders.entrySet().iterator();
while (iterator.hasNext() && builder == null) {
Map.Entry<String, Builder> entry = iterator.next();
String key = entry.getKey();
if (contentType.matches(key)) {
builder = entry.getValue();
}
}
}
return builder;
}
public static Builder createBuilder(String className) throws AxisFault {
try {
Class c = Class.forName(className);
Object o = c.newInstance();
if (o instanceof Builder) {
return (Builder) o;
}
} catch (ClassNotFoundException e) {
handleException("Builder class not found :" +
className, e);
} catch (IllegalAccessException e) {
handleException("Cannot initiate Builder class :" +
className, e);
} catch (InstantiationException e) {
handleException("Cannot initiate Builder class :" +
className, e);
}
return null;
}
public static MessageFormatter createFormatter(String className) throws AxisFault {
try {
Class c = Class.forName(className);
Object o = c.newInstance();
if (o instanceof MessageFormatter) {
return (MessageFormatter) o;
}
} catch (ClassNotFoundException e) {
handleException("MessageFormatter class not found :" +
className, e);
} catch (IllegalAccessException e) {
handleException("Cannot initiate MessageFormatter class :" +
className, e);
} catch (InstantiationException e) {
handleException("Cannot initiate MessageFormatter class :" +
className, e);
}
return null;
}
private static void handleException(String message, Exception e) throws AxisFault {
log.error(message, e);
throw new AxisFault(message, e);
}
}